[asterisk-users] E911 Voip Trunking

Fri Apr 19 14:29:29 CDT 2013

Section 6.5.2 (v4 interface) of NENA's v2 Interim Voip Architecture
Standard shows a ladder diagram of their SIP flow which seems to match
standard SIP. Maybe I'm oversimplifying it?

[1]
http://c.ymcdn.com/sites/www.nena.org/resource/collection/2851C951-69FF-40F0-A6B8-36A714CB085D/NENA_08-001-v2_Interim_VoIP_Architecture_i2.pdf

On Fri, Apr 19, 2013 at 2:51 PM, Terry Brummell <terry at brummell.net> wrote:

>  E911 does not follow the standard SIP RFC.  That would be a good reason
> that they couldn't/wouldn't do it.  Now that I say that I should qualify it
> and say "NG911 (or ESINet) does not follow SIP RFC"
> http://en.wikipedia.org/wiki/Next_Generation_9-1-1.  That is not saying
> your county is not using standard SIP for E911, it just wouldn't be
> considered NG911.
>
> ------------------------------
> *From:* Chris Nighswonger
> *Sent:* Fri 4/19/2013 11:41 AM
> *To:* Asterisk Users Mailing List - Non-Commercial Discussion
> *Subject:* [asterisk-users] E911 Voip Trunking
>
>   During the course of a conversation with an member of the IT group who
> handles the E911 center for our county, I learned that all of the county's
> E911 is voip based. This got me to wondering why we could not just
> configure up a SIP or some such trunk directly to the E911 center to handle
> our emergency traffic. The county seems interested in exploring the
> possibility.
>
> So I'm wondering if anyone else has attempted this.
>
> Kind Regards,
> Chris
>
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